To uninstall an operating system, use a previous version of that operating system on the computer. For instance, if Windows 7 is installed, it can be uninstalled by installing Windows Vista or Windows XP on the computer. The Windows XP installation CD allows the user to delete the contents of a hard drive or partition that has an operating system on it without installing a new one.

Step 1

Insert the Windows Installation Disc into the disc drive and restart the computer

Step 2

Press any key to boot from the disc.

Step 3

Start the setup. In Windows XP, press "Enter," then the F8 key to accept the user agreement. In Windows Vista, select a language, then click "Next." Click "Install Now," then enter the product key. Check the box to accept the user agreement, then click "Next."

Step 4

Delete the current operating system. In Windows XP, select the drive, then press "D" to delete it. Press "L" to confirm the deletion. In Vista, click "Drive Options," then select the drive with the operating system and press "Delete." At this point, the user can choose to continue installation and downgrade to XP or Vista. The previous operating system is deleted.

Tip

Uninstalling an operating system will remove any files or settings from that system. It is recommended that any data on the operating system to be uninstalled be backed up using a network location or removable media, such as a CD or DVD.

References

Resources

About the Author

Dean Lee began writing in 2008, with articles appearing on various websites. Lee is currently a network technician with both Cisco Certified Network Associate and Security+ certifications. Lee graduated from the University of Virginia with a Bachelor of Arts in economics and later completed a Master of Arts in communication at Regent University.